No one relies on bike theft to "survive".

No one goes around stealing bikes just because they want to do bad things.

What are you basing that on?

That's right, people steal bikes because they are inherently evil and want to make baby Jesus cry.

I think it's ok to define "survive" as an addict who needs (<-also loosely defined) a fix.

You don't generally commit serious white collar crime, tax fraud or do crypto grifts to survive. For petty street crime, I don't really see any other motivation.